linux-kernel - Re: [PATCH 2/2] mm: hugetlb: fix type of hugetlb_treat_as

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Date:	Wed, 17 Dec 2014 16:39:58 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Andrey Ryabinin <a.ryabinin@...sung.com>
cc:	akpm@...ux-foundation.org, Dmitry Vyukov <dvyukov@...gle.com>,
	Manfred Spraul <manfred@...orfullife.com>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Luiz Capitulino <lcapitulino@...hat.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	"nadia.derbey@...l.net" <Nadia.Derbey@...l.net>, aquini@...hat.com,
	Joe Perches <joe@...ches.com>, avagin@...nvz.org,
	LKML <linux-kernel@...r.kernel.org>,
	Kostya Serebryany <kcc@...gle.com>,
	Dmitry Chernenkov <dmitryc@...gle.com>,
	Andrey Konovalov <andreyknvl@...gle.com>,
	Konstantin Khlebnikov <koct9i@...il.com>,
	kasan-dev <kasan-dev@...glegroups.com>,
	Davidlohr Bueso <dave@...olabs.net>, linux-mm@...ck.org
Subject: Re: [PATCH 2/2] mm: hugetlb: fix type of hugetlb_treat_as_movable
 variable

On Wed, 17 Dec 2014, Andrey Ryabinin wrote:

> hugetlb_treat_as_movable declared as unsigned long, but
> proc_dointvec() used for parsing it:
> 
> static struct ctl_table vm_table[] = {
> ...
> 	{
> 		.procname	= "hugepages_treat_as_movable",
> 		.data		= &hugepages_treat_as_movable,
> 		.maxlen		= sizeof(int),
> 		.mode		= 0644,
> 		.proc_handler	= proc_dointvec,
> 	},
> 
> This seems harmless, but it's better to use int type here.
> 
> Signed-off-by: Andrey Ryabinin <a.ryabinin@...sung.com>

Acked-by: David Rientjes <rientjes@...gle.com>
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